1: (3 6 15)

(0 19 2)(1 8 4)(3)(5 20 6 17 15)(7 11 9)(10 14 12)(13 18 16)

2: (6 17 20)

(0 19 2)(1 8 4)(3)(5 20 15)(6)(7 11 9)(10 14 12)(13 18 16)(17)

3: (1 8 4)

(0 19 2)(1)(3)(4)(5 20 15)(6)(7 11 9)(8)(10 14 12)(13 18 16)(17)

4: (13 18 16)

(0 19 2)(1)(3)(4)(5 20 15)(6)(7 11 9)(8)(10 14 12)(13)(16)(17)(18)